Allen-Bradley 1746-HSCE User manual

High-Speed Counter Module

(Catalog Numbers 1746-HSCE)

Installation Instructions

Important User Information.........................2

For More Information...................................3

High-Speed Counter Module Overview.......4

Dip Switch and Jumper Locations...............7

Installing the Module .................................10

Removing the Terminal Block....................11

Important Wiring Considerations...............12

Encoders...................................................14

Specifications............................................20

page

Inside..

Allen-Bradley HMIs

Publication 1746-5.16

Important User Information

Because of the variety of uses for the products described in this publication, those

responsible for the application and use of this control equipment must satisfy

themselves that all necessary steps have been taken to assure that each

application and use meets all performance and safety requirements, including any

applicable laws, regulations, codes and standards.

The illustrations, charts, sample programs and layout examples shown in this

guide are intended solely for purposes of example. Since there are many

variables and requirements associated with any particular installation,

Allen-Bradley does not assume responsibility or liability (to include intellectual

property liability) for actual use based upon the examples shown in this

publication.

Allen-Bradley publication SGI-1.1, Safety Guidelines for the Application,

Installation, and Maintenance of Solid-State Control (available from your local

Allen-Bradley office), describes some important differences between solid-state

equipment and electromechanical devices that should be taken into consideration

when applying products such as those described in this publication.

Reproduction of the contents of this copyrighted publication, in whole or in part,

without written permission of Allen-Bradley Company, Inc., is prohibited.

Throughout these installation instructions we use notes to make you aware of

safety considerations:

Attention statements help you to:

• identify a hazard

• avoid the hazard

• recognize the consequences

!ATTENTION: Identifies information about practices or

circumstances that can lead to personal injury or death, property

damage or economic loss.

Important:

Identifies information that is critical for successful application and

understanding of the product.

Publication1746-5.16

For More Information

As part of our effort to preserve, protect, and improve our environment,

Allen-Bradley is reducing the amount of paper we use. Less paper means more

options for you. In addition to traditional printed publications and CD-ROM

versions, we now offer on-line manuals with the most up-to-date information you

can get. We recommend that you read the related publications listed below before

starting up your control system.

Related Publications

If you would like a manual, you can:

• download a free electronic version from the internet:

www.theautomationbookstore.com

• purchase a printed manual by:

— contacting your local distributor or Rockwell Automation

representative

— visiting www.theautomationbookstore.com and placing your order

— calling 1.800.963.9548 (USA/Canada) or

001.330.725.1574 (Outside USA/Canada)

For Refer to this Document Pub. No.

A more detailed description on how to

configure and program the High-Speed

Counter Module. High-Speed Counter Module

User Manual 1746-6.5

A more detailed description on how to install

and use your modular SLC 500 system. SLC 500 Modular Hardware

Style Installation and

Operation Manual 1747-6.2

A reference manual that contains status file

data, instruction set, and troubleshooting

information.

SLC 500 and MicroLogix

1000 Instruction Set

Reference Manual 1747-6.15

A CD-ROM containing both of the manuals

listed above, plus the:

•SLC 500 Analog I/O Modules User Manual

•Discrete I/O Modules Installation Instructions

•Discrete I/O Modules Product Data

SLC500Literature Collection

on CD-ROM 1747-CD1-1

Allen-Bradley HMIs

Publication 1746-5.16

High-Speed Counter Module Overview

The High-Speed Counter Module, Catalog Number 1746-HSCE is an SLC 500

family compatible device. It can be used with SLC 5/02 (and above)

processors.(1)

The module’s bidirectional counting ability allows it to detect movement in

either direction. In addition, x2 and x4 counting modes are provided to fully use

the capabilities of high-resolution quadrature encoders.

High-speed inputs from quadrature encoders and various high-speed switches are

supported. Accepting input pulse frequencies of up to 50k Hz allows precise

control of fast motions.

In addition to providing an Accumulated Counter, the module provides a Rate

Counter to determine Rate Measurement by indicating the pulse input frequency

in Hz. (Refer to the block diagram on the following page.) The Rate

Measurement is determined by accumulating input pulses over a fixed period of

time. You set the Rate Period to best match your application requirements.

Background Rate calculation is provided in Sequencer and Range Modes. This

operation accepts input rates up to 32,767 Hz. The dynamically configurable

Rate Period ranges from 10 ms to 2.55 seconds.

The module’s four current sink (open collector) outputs can be controlled from

one of two sources:

• the user program

•themodule

Control of the counter reset is configured through user-set parameters. The

counter can be reset from any combination of the Z input, Limit Switch input, or

Soft Reset control bits.

(1) The 1746-HSCE High-Speed Counter Module is not compatible with the 1747-ASB Remote I/O

Adapter Module.

Publication1746-5.16

Module operation is determined by selections made in the Setup and Control

Word (M0:e.1). Setting the Function Control bit to 1 triggers the module to start

the proper pulse counter, rate measurement, and output control functions. Many

parameters are dynamic and can be changed without disrupting counter

operation.

A block diagram of the module is shown below. Inputs from the terminal block

enter the diagram at the left, outputs to the terminal block exit at the right. M0

and Output file parameters from the SLC enter the logic blocks from the top.

Input file data to the SLC exit the logic blocks from the bottom.

Allen-Bradley HMIs

Publication 1746-5.16

Counter Input

Parameters

Pulse and

Direction

Rate Period

Parameters

Rate

Counter

Rate

Measurement

Reset

Parameters

Input

Logic

Reset

Logic

Reset

Condition

ResetInput

Pulse

Counter

Pulse

Counter

Inputs

Pulse Counter

Parameters

Rate

Counter Input

Accumulated

Count

Operating Mode

Parameters

OperatingMode

Logic

Rate

Sequencer

Range

Operating

mode

Outputs

OutputControl

Parameters

Operating Mode

Inputs

Output Status

Inputs

Physical

Outputs

Output

Control

Logic

To Terminal Block

From Terminal Block

LS Filter

(JW1)

Counter Input Parameters

Input Type (MO:e.1/9-11)

Up/Down Count Direction (MO:e 1/3) -d

Reset Parameters

Soft Reset bit (MO:e. 1/4) -d

Reset Mode (MO:e.1/5-7)

Rate Period Parameters

Rate Period (MO:e.9/0-7 or MO:e.16/0-7) -d

Operating Mode parameters

Operating Mode (MO:e.1/14-15)

Function Control Bit (MO:e.1/12)

Range Definitions:

Range Starting Values(MO:e.10-33) -d

Range Ending Values (MO:e.10-33) -d

Range Outputs (MO:e. 3-8) -d

Valid Ranges (MO:e.2) -d

Sequencer Definitions

Valid Steps (MO:e.2 and MO:e.3/0-7) -d

Step Presets (MO:e.17-40)

Step Outputs (MO:e.4-15)

Initial Outputs (MO:e.3/8-15) -d

Sequencer Reset (MO:e.1/0) -d

Critical Error (I:e.0/10)

Configuration Error bit (I:e.0/11)

Configuration Error Code (I:e.4/0-7)

-d indicates a dynamic parameter

Pulse Counter Parameters

Reset Value (MO:e.34 or MO:e.41) -d

Maximum Count Value (MO:e.34 or MO:e.41

Counter Hold bit (MO:e.1/2) -d

Counter Type bit (MO:e.1/13)

Output Control Parameters

Direct Outputs (O:e.0/0-7) -d

Output Source Select (MO:e.0/0-7) -d

Enable Outputs bit (MO:e.1/1) -d

Rate Counter Inputs

Rate Valid (I:e.0/3)

Rate Counter Overflow (I:e.0/4)

Rate Measurement Overflow (I”e.0/5)

Zero Rate Period Count (I:e.0/2)

Rate Period Count (I:e.2)

Rate Measurement (I:e.3)

Pulse Counter Inputs

Accumulated Count (I:e.1)

Overflow/Underflow (I:e.0/13)

Pulse Counter State (I:e.0/14-15)

Operating Mode Inputs

Sequencer Inputs

Current Sequencer Step (I:e.5/0-7)

Next Sequencer Step (I:e.5/8-15)

Sequence Done (I:e.0/6)

Range inputs

Ranges Active (I:e.6/0-11)

Output Status Inputs (I:e.4/8-15)

Error Inputs

Publication1746-5.16

Dip Switch and Jumper Locations

Two dip switches (SW1 and SW2) and one jumper (JW1) are located on the side

of the module.

• SW1 selects the type of input (single ended or differential).

• SW2 selects the output voltage range (4.5-10V dc or 10-30V dc).

• JW1 selects the filtering rate (300 µs or 10 ms) used to debounce the limit

switch input.

Default settings are shown below:

!ATTENTION: Use a small screwdriver to change dip switch

positions. Graphite from pencils will damage the switch.

1234

O1234

SW2 Default

10-30V dc

JW1 Default

10 mS Filter

SW1 Default

Single-Ended Operation

SW2

JW1

SW1

JW1

SW2

JW1

Allen-Bradley HMIs

Publication 1746-5.16

SW2 Settings

Select an output voltage range that coincides with your supply voltage. The

selections are 4.5 - 10V dc or 10 - 30V dc.

SW1 Settings

Select an input connection, single-ended or differential.

It is possible to configure different inputs in different modes. For example, input

A (CHA) can be configured as differential and input Z (CHZ) can be configured

as single-ended.

!ATTENTION: All switches of SW2 must be ON or all switches

must be OFF. Permanent damage may result if some are ON and

some are OFF.

Operating in the 10-30V dc range with the switches set for the

4.5-10V dc range damages the module.

1234

OFF

10-30V dc

4.5-10V dc

Switch

Output

123 4

ABZ

1234

OFF

Switch

Channel not used

Dip switch SW1

OFF

Position Input Connection Input ON range

differential

single-ended

2.8-4.5V dc

3.1-5.5V dc

Publication1746-5.16

JW1 Settings

Select 300 µs or 10 ms filtering to debounce the limit switch input. Position the

jumper as follows:

The LS input allows you to make a direct connection to nominal voltage levels of

5, 12, or 24V dc. The ON voltage ranges are as follows:

Refer to pages 19 and 20 for limit switch wiring instructions.

Wiring Terminal ON range

LS (24V dc) 16.5-30V dc

LS (12V dc) 9.4-16.5V dc

LS (5V dc) 3.8-5.5V dc

!ATTENTION: Only connect one LS input range at a time.

Otherwise, the module will be damaged.

321 321

JW1

10 ms filter

JW1

300 µs filter

Allen-Bradley HMIs

Publication 1746-5.16

Installing the Module

Installation procedures for this module are the same as any other discrete I/O or

specialty module.

1. Align the full-size circuit board with the rack card guide. The first slot (slot

0) of the first rack is reserved for the CPU.

2. Slide the module into the rack until the top and bottom latches are latched.

To remove the module, press the releases at the top and bottom of the

module and slide it out.

Important:

Set the dip switches before installing the module.

!ATTENTION: Disconnect power before attempting to install,

remove, or wire the module.

Make sure your SLC power supply has adequate reserve current

capacity. The module requires 320 mA at 5V dc.

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